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Not all publications have extents, not all extents are completely accurate
Water resources data, Pennsylvania, water year 1998. Volume 2. Susquehanna and Potomac River basins
R.R. Durlin, W.P. Schaffstall
1999, Water Data Report PA-98-2
Water resources data for the 1998 water year for Pennsylvania consist of records of discharge and water quality of streams; contents and elevations of lakes and reservoirs; and water levels and water quality of ground-water wells. This report, Volume 2, contains (1) discharge records for 85 continuous-record streamflow-gaging stations and...
Bathymetry of the Republic of the Marshall Islands and vicinity
James R. Hein, Florence L. Wong, Dan L. Mosier
1999, Miscellaneous Field Studies Map 2324
The bathymetric map of the Republic of the Marshall Islands and vicinity is bounded by a window of latitude 3 to 17 degrees North, longitude 153 to 175 degrees East. The map was compiled from surveys conducted by the USGS, Korean Ocean Research and Development Institute, and published gridded data....
A Topographic Field Trip of Washington, D.C. - A Cartographic Multimedia Application
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 178-99
The U.S. Geological Survey (USGS) has produced ?A Topographic Field Trip of Washington, D.C.,' a multimedia CD-ROM that uses topographic maps to tour Washington, D.C. Although designed for the middle school grade level, it can also be used to teach introductory topographic map reading skills to any level. Two versions of...
Use of semipermeable membrane devices (SPMD) to assess occurrence and estimate water concentrations of selected organic compounds in the Rio Grande from Presidio to Brownsville, Texas
J. Bruce Moring
1999, Fact Sheet 100-99
In Texas, the Rio Grande forms the international boundary between Mexico and the United States and extends about 2,000 kilometers from El Paso to the mouth of the Rio Grande just south of Brownsville, where the river flows into the Gulf of Mexico (fig. 1). The North American Free Trade...
Using maps in genealogy
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 140-99
Maps are one of many sources you may need to complete a family tree. In genealogical research, maps can provide clues to where our ancestors may have lived and where to look for written records about them. Beginners should master basic genealogical research techniques before starting to use topographic maps....
El Proyecto Sismico "LARSE" - Trabajando Hacia un Futuro con Mas Seguridad para Los Angeles
Thomas L. Henyey, Gary S. Fuis, Mark L. Benthien, Thomas R. Burdette, Shari A. Christofferson, Robert W. Clayton, Edward E. Criley, Paul M. Davis, James W. Hendley II, Monica D. Kohler, William J. Lutter, John K. McRaney, Janice M. Murphy, David A. Okaya, Trond Ryberg, Gerald W. Simila, Peter H. Stauffer
1999, Fact Sheet 111-99
La region de Los Angeles contiene una red de fallas activas, incluyendo muchas fallas por empuje que son profundas y no rompen la superficie de la tierra. Estas fallas ocultas incluyen la falla anteriormente desconocida que fue responsable por la devastacion que ocurrio durante el terremoto de Northridge en enero...
Evaluation of processes affecting 1,2-dibromo-3-chloropropane (DBCP) concentrations in ground water in the eastern San Joaquin Valley, California: Analysis of chemical data and ground-water flow and transport simulations
Karen R. Burow, Sandra Y. Panshin, Neil H. Dubrovsky, David Vanbrocklin, Graham E. Fogg
1999, Water-Resources Investigations Report 99-4059
Future use of the sole-source aquifer near Fresno in the eastern San Joaquin Valley, California, will depend, in part, on how long 1,2-dibromo-3-chloropropane (DBCP), an agricultural fumigant banned from use since the late 1970's, persists at concentrations greater than the maximum contaminant level of 0.2 micrograms per liter (mg/L). Field...
Distribution of major herbicides in ground water of the United States
Jack E. Barbash, Gail P. Thelin, Dana W. Kolpin, Robert J. Gilliom
1999, Water-Resources Investigations Report 98-4245
Information on the concentrations and spatial distributions of pesticides and their transformation products, or degradates, in the hydrologic system is essential for managing pesticide use in both agricultural and nonagricultural settings to protect water resources. This report examines the occurrence of selected herbicides and their degradates in ground water, primarily...
U.S. Geological Survey and Microsoft Cooperative Research and Development Agreement: Geospatial Data Browsing and Retrieval Site on the World Wide Web
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 072-99
In May 1997, the U.S. Geological Survey (USGS) and the Microsoft Corporation of Redmond, Wash., entered into a cooperative research and development agreement (CRADA) to make vast amounts of geospatial data available to the general public through the Internet. The CRADA is a 36-month joint effort to develop a general,...
Nitrate, volatile organic compounds, and pesticides in ground water — A summary of selected studies from New Jersey and Long Island, New York
Rick M. Clawges, Paul E. Stackelberg, Mark A. Ayers, Eric F. Vowinkel
1999, Water-Resources Investigations Report 99-4027
This report describes the ground-water systems in the unconsolidated sand and gravel aquifers of the Coastal Plain of New Jersey and Long Island and in the fractured bedrock and valley-fill aquifers of northern New Jersey; summarizes current knowledge about the occurrence and distribution of nitrate, volatile organic compounds (VOCs), and...
Digital raster graphics
Water Resources Division, U.S. Geological Survey
1999, Fact Sheet 070-99
A digital raster graphic (DRG) is a scanned image of a U.S. Geological Survey (USGS) topographic map. The scanned image includes all map collar information. The image inside the map neatline is georeferenced to the surface of the Earth. The DRG can be used to collect, review, and revise other...
Ground-water flow, solute transport, and simulation of remedial alternatives for the water-table aquifer in Vega Alta, Puerto Rico
Nicasio Sepulveda
1999, Water-Resources Investigations Report 97-4170
The water-table aquifer in Vega Alta, Puerto Rico, has been contaminated with volatile organic compounds. A three-dimensional ground-waterflow and solute-transport model was developed and calibrated to evaluate the effects of remedial alternatives designed to reduce the magnitude and extent of a trichloroethylene plume in the water-table aquifer. The development of...
Distribution and transport of polychlorinated biphenyls and associated particulates in the Hayton Millpond, south branch Manitowoc River, 1993-95
Jeffrey S. Steuer, David W. Hall, Sharon A. Fitzgerald
1999, Water-Resources Investigations Report 99-4101
The distribution and transport of polychlorinated biphenyl (PCB) congeners was determined at two sites on Pine Creek and at the Hayton Millpond on the South Branch of the Manitowoc River in Wisconsin during 1993-95. PCB congener compositions were analyzed in the operationally defined dissolved phase, suspended particulate phase, and surficial...